Navy Arms, .50 cal. “mule ear” side hammer percussion rifle.  Serial #0017.  Very good condition.  24” octagonal barrel has excellent bore, open sight, 93% blue with one corrosion spot on left side of rear sights.  Lock plate and hammer have excellent case coloring.   Walnut stock has excellent finish.  Brass hardware is excellent.  Side hammer locks works fine.  Black powder, can ship to your door.